package socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

public class ServerPractice {
    private ServerSocket serverSocket;
    public ServerPractice() {
        System.out.println("正在启动服务器");
        try {
            serverSocket=new ServerSocket(9999);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("服务器启动成功");
    }
    public void start(){
        try {
            while(true) {
                System.out.println("等待客户端连接");
                Socket socket = serverSocket.accept();
                System.out.println("一个客户端连接上了");

                Runnable r1=new ClientSay(socket);
                Thread t=new Thread(r1);
                t.start();


            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        ServerPractice s=new ServerPractice();
        s.start();
    }

    class ClientSay implements Runnable{
        private Socket socket;
        private String host;
        public ClientSay(Socket socket){
            this.socket=socket;
            host=socket.getInetAddress().getHostAddress();
        }


        public void run() {
            try {
                InputStream is = socket.getInputStream();
                InputStreamReader isr=new InputStreamReader(is,StandardCharsets.UTF_8);
                BufferedReader br=new BufferedReader(isr);
                String line;
                while((line=br.readLine())!=null){
                    System.out.println(host+"说："+line);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
